<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>

<body>
    <div id="app">
        <myheader></myheader>
    </div>
    <script>
        new Vue({
            el: "#app",
            components: {

                "myheader": {
                    template: `
                    <div>
                        <h1>{{ title }} </h1>
                        <h2>标题2</h2>
                    </div>
                    `,
                    data() {
                        return {
                            title: "小米"
                        }
                    }
                }
            }
        })
    </script>
</body>

</html>